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C Program to check a number is Armstrong or not using the function


In this program, You will learn how to check a number is Armstrong or not using a function in c.


Some list of Armstrong numbers is: 153, 370, 371, 407

Example: How to check a number is Armstrong or not using a function in c

#include<stdio.h>
int check(int n) {
   int r, arm = 0;

   while (n > 0) {
       r = n % 10;
       arm = arm + r * r * r;
       n = n / 10;
   }
   return arm;
}

int main() {
   int n, arm;
   printf("Enter a number:");
   scanf("%d", &n);

   arm = check(n);

   if (arm == n) {
       printf("Number is Armstrong:%d", n);
   } else {
       printf("Number is not Armstrong:%d", n);
   }

   return 0;
}

Output:

Enter a number:153
Number is Armstrong:153